STATS 13 Study Guide - Midterm Guide: Confidence Interval, Null Hypothesis, Central Limit Theorem
Document Summary
Se = (1. 52/100 + 2. 22/80) = . 288 mmol/l: how much does one ucla student"s blood glucose level typically differ from the mean of. 1. 5 mmol/l: consider the following for the next 5 problems. About 9. 30% of americans have diabetes, according to the cdc. A scientist wants to see if the frequency of diabetes among americans with type a blood is different from the overall percentage of 9. 30%. She takes a simple random sample of 144 patients with type a blood, and finds that 13 of them have diabetes. Based only on the sample of 144 type a blooded americans, find a 95% ci for the percentage of type a blooded americans with diabetes: 9. 03% +/- 4. 7%, 9. 03% +/- 5. 8%, 9. 03% +/- 6. 1%, 9. 03% +/- 7. 8%. Under this null hypothesis, what is the size of the standardized z statistic, summarizing the difference between the sample percentage with diabetes and the population percentage with diabetes: 0. 0321, 0. 0505, 0. 112, 0. 676.
